Colombia is a relatively large producer of gold on the global scale, but it has an out-sized role in the amount of pollution it produces. But a new group of miners, small now, is turning to a more earth-friendly, even historic, way of separating gold from ore.

Colombia is a relatively large producer of gold on the global scale, but it has an out-sized role in the amount of pollution it produces. But a new group of miners, small now, is turning to a more earth-friendly, even historic, way of separating gold from ore.

Colombia is a relatively large producer of gold on the global scale, but it has an out-sized role in the amount of pollution it produces. But a new group of miners, small now, is turning to a more earth-friendly, even historic, way of separating gold from ore.